Abstract
Intergroup communication is conceptualised as an interpersonal pro cess requiring linguistic competence, influenced by individual, interpersonal and group processes. Attention is focused mainly on group processes and the barriers they generate to effective intergroup communication. There is some consensus among theorists that clear social categories and threat to identity play an import ant role in deterring the effectiveness of intergroup communication. Little is known however about the factors influencing the operation of these two pro cesses. The present paper is concerned with recent data which bears on some of these factors. A third process, the perception of social injustice, has been rela tively neglected in the social psychology of language. It is introduced here as potentially important in the understanding of the breakdown of intergroup com munication.

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